class MiniTest::Spec

def self.it desc = "anonymous", &block
  block ||= proc { skip "(no tests defined)" }
  @specs ||= 0
  @specs += 1
  name = "test_%04d_%s" % [ @specs, desc.gsub(/\W+/, '_').downcase ]
  define_method name, &block
  self.children.each do |mod|
    mod.send :undef_method, name if mod.public_method_defined? name
  end
end